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  <meta charset="UTF-8">
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  <title>Document</title>
</head>
<body>
  <div>
    <h2>欢迎来到 德莱联盟</h2>
    <% if(!isVip){ %>
      <div id="ad" style='height: 200px;background: #45f'>广告</div> 
    <% }else{ %>
      VIP 用户
    <% } %>
  </div>
</body>
</html>